//打开下拉盒子
        $(document).on('click','.boxfall',function(){
        	$('.popupself').show()
        	setTimeout(function() {
	        	$('.popupself').css({
	        		  "transition": "opacity .5s",
			          "-webkit-transition": "opacity .5s",
			          "-moz-transition": "opacity .5s",
			          "-o-transition": "opacity .5s",
			          "-ms-transition": "opacity .5s",
			          "opacity": "1"
	        	})
        	}, 100);
        })

        //关闭盒子
        $(document).on('click','.modelop',function(){
        	$('.popupself').css("opacity","0")
        	setTimeout(function() {
	        	$('.popupself').hide()
        	}, 500);
        })